Look UP and click on the subscribe button. When it came time to fine-tune the simulation, Houdini provided Pixar’s artists with the ability to achieve rapid iterations thanks to a heavily trimmed simulation cache and procedural placement. Please subscribe to our videos, we are hoping to get 10,000 subscribers, so every one helps. This approach also gave them the opportunity to cull out a large percentage of unnecessary rigid bodies freeing up valuable resources. Applying a special geometry solver to the volume representation made it easy to determine which rigid body objects remained on the bottom layer of the pouring trash throughout the entire simulation. Using the volume representation, they could procedurally scatter plastic bags on top of the surface. In the end, love and friendship do still triumph in Toy Story 3, but it feels so much more earned because these toys have been on a journey to the incinerator hell and back. The results is as powerful as anything you’ll see all year as is Toy Story 3. With a simple network of geometry nodes, they turned it into an approximate volume representation. While something may surpass it, the incinerator sequence is a work of art all its own. With Houdini, they could simulate the floating plastic bags without having to modify the already approved look of the shot by importing a cache of rigid bodies from the simulation using propriety tools. Clearly, he was the only toy Daisy reacted so badly to losing that her parents had to buy a new one almost the next day. ![]() This sequence was simulated using Pixar’s proprietary tools and the bags needed to be easily integrated into the shot without re-running the simulation from scratch, which would have been too costly in terms of time and resources. This additional detail was being added to an already approved sequence of shots where a dump truck empties its haul of trash. In another scene, Pixar’s artists were assigned the task of animating plastic shopping bags that flutter through a wasteland of discarded trash. I honestly read that as the 'Clueless kids' of the bunch still chasing their little dream and, as soon as they see it and run off toward it, being crushed by the bulldozers.
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